<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>作业1</title>
</head>
<body>
    <script>
        var a=89;
    document.write((parseInt(a/24)) +"天"+(a%24)+"小时");
    </script>

</body>
</html>